Pneumatic-control double-position gas valve
A gas valve and two-position technology, which is applied in the field of gas control valve and gas-controlled two-position gas valve, can solve the problems of inability to cut off the gas pipeline, high price of proportional valve, troublesome installation and debugging, etc., so as to improve the scope of use and simplify the installation. , the effect of rapid action
Active Publication Date: 2014-09-03
SHAOXING XUEERDE FURNACE IND
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Problems solved by technology
[0003] For the existing industrial combustion system, two flow adjustment methods are often used: one is to use a special proportional valve to mix the air and gas in flow ratio, but this ratio control makes the gas pipeline pressure slightly higher and it is easy to reduce the flow rate inside. The diaphragm is broken, and this kind of special proportional valve is expensive and has a short service life; the other is to use double butterfly valves to mix air and gas in flow ratio, but this kind of installation and debugging is troublesome and easy to cause flameout
[0004] The above two kinds of combustion control cannot cut off the gas pipeline due to their own structure, and an electromagnetic safety valve must be installed on the gas pipeline to ensure that the gas pipeline is closed when it is not working.
As a result, the structure of the above two control methods is relatively complicated and the cost is relatively high.
Method used
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[0022] Please refer to the attached figure 1 to attach image 3 As shown, the present invention is an air-controlled two-position gas valve, which consists of an adjustable two-position cylinder 2, a valve body 1, a guide rod 3, a small gasket 4, a small valve plate 5, a small spring 6, a push rod 7, Several parts such as large spring 8, valve cover 9, large valve plate 10 and large gasket 11 are formed.
[0023] Wherein, the upper and lower ends of the valve body 1 hold the valve cover 9 respectively. A small through hole 12 and a large through hole 13 are provided in the valve body 1 . A small copper sleeve 14 is fixed in the small through hole 12 , and the small sealing gasket 4 can be abutted against the small through hole 12 , thereby preventing gas from passing through the small through hole 12 . A large copper sleeve 15 is fixed in the large through hole 13 , and the large sealing gasket 11 can abut against the large through hole 13 , thereby preventing gas from pass...
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The invention relates to a pneumatic-control double-position gas valve which comprises an adjustable double-position cylinder, a valve body, a guiding rod, a small sealing gasket, a small valve piece, a small spring, a push rod, a big spring, valve covers, a big valve piece and a big sealing gasket, wherein the valve covers are fixedly arranged at the upper end of the valve body and at the lower end of the valve body, the adjustable double-position cylinder is installed on the valve cover on the top portion of the valve body, one end of the guiding rod is connected with the adjustable double-position cylinder, the other end of the guiding rod is connected with the push rod in a threaded mode, the small valve piece is inserted into the guiding rod and is contained in the valve body, the big valve piece is fixedly arranged on the push rod and is contained in the valve body, the small spring is arranged between the small valve piece and the big valve piece, and the big spring abuts against the big valve piece and the valve cover on the bottom of the valve body. The pneumatic-control double-position gas valve has the advantages of being simple in structure, low in cost, high in production efficiency, energy-saving, environment-friendly, safe in use, and the like.
Description
technical field [0001] The invention relates to a gas control valve used in industrial combustion equipment or a furnace heating system, in particular to an air-controlled double-position gas valve, which belongs to the technical field of combustion equipment. Background technique [0002] During the working process of the gas industrial furnace, due to the requirements of the heating process, it is often necessary to control the temperature rise rate and temperature of the furnace, and these are realized by changing the gas flow. [0003] For the existing industrial combustion system, two flow adjustment methods are often used: one is to use a special proportional valve to mix the air and gas in flow ratio, but this ratio control makes the gas pipeline pressure slightly higher and it is easy to reduce the flow rate inside. The diaphragm is broken, and this special proportional valve is expensive and has a short service life; the other is to use double butterfly valves to mi...
Claims
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IPC IPC(8): F16K11/22F16K31/122
Inventor 邵紫光叶超
Owner SHAOXING XUEERDE FURNACE IND